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Modified vermiculite adsorbent for removing manganese in polluted water body and preparation method of modified vermiculite adsorbent

A technology of adsorbent and vermiculite, which is applied in the field of modified vermiculite adsorbent and its preparation, and can solve problems such as lack of

Inactive Publication Date: 2017-05-17
北京源清益壤环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is still a lack of cheap and efficient adsorption materials for removing manganese in polluted water. Therefore, the development of modified vermiculite adsorbents for removing manganese in polluted water is of great significance for the treatment of heavy metal pollution in polluted water.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] (1) Add 41.29g of vermiculite to 250mL of nitric acid solution with a concentration of 10% by mass, stir for 50 minutes under the condition of 1000r / min, filter and remove the liquid, wash with 500mL of deionized water and place in a drying oven at 105°C Stand for 35 minutes to obtain substance A0;

[0052] (2) 6.38g chitosan is added to 900mL of 5% acetic acid solution in mass percent concentration, stirred for 3 minutes under the condition of 1000r / min, shaken up and divided into 5 equal parts to obtain mixed solution G1 and mixed solution G2 , mixed solution G3, mixed solution G4, mixed solution G5;

[0053] (3) Add 7.05 grams of hydroxyethyl-β-cyclodextrin and 50 mL of dimethyl sulfoxide into 150 mL of isopropanol, stir for 3 minutes at 1000 r / min, shake well and divide into 5 equal parts to obtain Mixed solution H1, mixed solution H2, mixed solution H3, mixed solution H4, mixed solution H5;

[0054] (4) Add mixed solution H1 and 8mL 2,2-dimethyl-3-phenyloxirane i...

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Abstract

The invention discloses a modified vermiculite adsorbent for removing manganese in a polluted water body. The modified vermiculite adsorbent is prepared by the following steps of: cleaning vermiculite, modifying the vermiculite by virtue of mixed liquid prepared from chitosan, acetic acid, hydroxyethyl-beta-cyclodextrin, dimethyl sulfoxide, isopropanol and 2,2-dimethyl-3-phenyl ethylene oxide, so as to form a matter A; modifying the matter A by virtue of mixed liquid prepared from SnCl4, BiCl3, Pb(NO3)2 and Cd(NO3)2, so as to form a matter B; modifying the matter B by virtue of mixed liquid prepared from tetra-n-butyl titanate, heptamethyldisilazane and pentamethyldiethylenetriamine, so as to form a matter C; and modifying the matter C by virtue of mixed liquid prepared from acrylic acid, potassium persulfate, polyvinylpyrrolidone and 2-trimethylsilylpyridine, so as to form a matter, namely the modified vermiculite adsorbent for removing the manganese in the polluted water body.

Description

technical field [0001] The invention belongs to the technical field of heavy metal pollution control in polluted water, and in particular relates to a modified vermiculite adsorbent for removing manganese in polluted water and a preparation method thereof. Background technique [0002] Due to the characteristics of high toxicity, refractory, and persistence of heavy metals, heavy metal pollution in water bodies has become a serious and common environmental problem, which has attracted extensive attention from domestic and foreign scholars. Heavy metals can interact with proteins in the human body to inactivate them, and they can also accumulate in certain organs of the human body. If they exceed the limit that the human body can bear, they will affect the lungs, kidneys, liver and other important organs through blood circulation. , can cause poisoning and other diseases, and is extremely harmful to the human body. Therefore, it is of great social, economic and environmental...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/12B01J20/30C02F1/28C02F101/20
CPCB01J20/12C02F1/281C02F2101/206
Inventor 不公告发明人
Owner 北京源清益壤环保科技有限公司
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